package com.ttbj.core.util;

import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Shape;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.util.Hashtable;
import java.util.Random;

import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;

import org.apache.log4j.Logger;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/**
 * 二维码工具类
 * 
 */
public class QRUtil {
	private static final String CHARSET = "utf-8";
	private static final String FORMAT_NAME = "JPG";
	private static Logger logger = Logger.getLogger(QRUtil.class);
	// 二维码尺寸

	// LOGO宽度
	private static final int WIDTH = 40;
	// LOGO高度
	private static final int HEIGHT = 40;

	public  static BufferedImage createImage(String content, String imgPath, boolean needCompress, boolean type)
			throws Exception {
		int QRcode_size;
		if (type) { // 微信大
			QRcode_size = 194;
		} else {
			QRcode_size = 199;
		}
		Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
		hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
		hints.put(EncodeHintType.MARGIN, 1);
		BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRcode_size, QRcode_size,
				hints);
		int width = bitMatrix.getWidth();
		int height = bitMatrix.getHeight();
		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
		for (int x = 0; x < width; x++) {
			for (int y = 0; y < height; y++) {
				image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
			}
		}
		if (imgPath == null || "".equals(imgPath)) {
			return image;
		}
		// 插入图片
		QRUtil.insertImage(image, imgPath, needCompress, QRcode_size);
		return image;
	}

	/**
	 * 插入LOGO
	 * 
	 * @param source
	 *            二维码图片
	 * @param imgPath
	 *            LOGO图片地址
	 * @param needCompress
	 *            是否压缩
	 * @throws Exception
	 */
	private static void insertImage(BufferedImage source, String imgPath, boolean needCompress, int QRCODE_SIZE)
			throws Exception {
		File file = new File(imgPath);
		if (!file.exists()) {
			System.err.println("" + imgPath + "   该文件不存在！");
			return;
		}
		Image src = ImageIO.read(new File(imgPath));
		int width = src.getWidth(null);
		int height = src.getHeight(null);
		if (needCompress) { // 压缩LOGO
			if (width > WIDTH) {
				width = WIDTH;
			}
			if (height > HEIGHT) {
				height = HEIGHT;
			}
			Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);
			BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
			Graphics g = tag.getGraphics();
			g.drawImage(image, 0, 0, null); // 绘制缩小后的图
			g.dispose();
			src = image;
		}
		// 插入LOGO
		Graphics2D graph = source.createGraphics();
		int x = (QRCODE_SIZE - width) / 2;
		int y = (QRCODE_SIZE - height) / 2;
		graph.drawImage(src, x, y, width, height, null);
		Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
		graph.setStroke(new BasicStroke(3f));
		graph.draw(shape);
		graph.dispose();
	}
	/**
	 * 生成二进制图片流
	 * @param content 内容
	 * @param imageType  例如  jpg,png
	 * @return
	 * @throws Exception
	 */
	public static InputStream streamQr(String content,String imageType) throws Exception{
		if(content == null){
			return null;
		}
		BufferedImage createImage = createImage(content, null, false, false);
		ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
		ImageOutputStream imageOutput = ImageIO.createImageOutputStream(byteArrayOutputStream);
		ImageIO.write(createImage, imageType, imageOutput);
		InputStream inputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
		return inputStream;
	}

	/**
	 * 生成二维码(内嵌LOGO)
	 * 
	 * @param content
	 *            内容
	 * @param imgPath
	 *            LOGO地址
	 * @param destPath
	 *            存放目录
	 * @param needCompress
	 *            是否压缩LOGO
	 * @throws Exception
	 * @return file 返回文件名
	 */
	public static String encode(String content, String imgPath, String destPath, boolean needCompress, boolean type,
			String name) throws Exception {

		BufferedImage image = QRUtil.createImage(content, imgPath, needCompress, type);

		mkdirs(destPath);

		String nameImg = name + System.currentTimeMillis() + ".jpg";

		String file = destPath + nameImg;

		logger.info(file + "+==destPath++file======>");

		File tempFile = new File(file);

		tempFile.createNewFile();

		ImageIO.write(image, FORMAT_NAME, tempFile);
		
		return nameImg;
	}

	public static String encode(String content, String imgPath, String destPath, boolean needCompress, boolean type)
			throws Exception {

		BufferedImage image = QRUtil.createImage(content, imgPath, needCompress, type);

		mkdirs(destPath);

		String file = new Random().nextInt(99999999) + ".jpg";

		File tempFile = new File(destPath + File.separator + "QRimg" + File.separator + file);

		tempFile.createNewFile();

		ImageIO.write(image, FORMAT_NAME, tempFile);

		return file;
	}

	/**
	 * 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
	 * 
	 * @author lanyuan
	 * @param destPath
	 *            存放目录
	 */
	public static void mkdirs(String destPath) {
		File file = new File(destPath);
		// 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
		if (!file.exists() && !file.isDirectory()) {
			file.mkdirs();
		}
	}

	public static boolean mkdirsfile(String imgfile) {
		File file = new File(imgfile);
		// 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
		if (file.exists()) {
			return true;
		}
		return false;
	}
 
 

}